diff options
author | Jérôme Pouiller <jerome.pouiller@silabs.com> | 2019-09-19 14:25:45 +0000 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-04 10:47:35 +0200 |
commit | 9bca45f3d6924f19f29c0d019e961af3f41bdc9e (patch) | |
tree | ad4801c513155558e7e636c734d15d2cce6214fd /drivers/staging/wfx/data_tx.h | |
parent | f4a71ba8753d94cc5c1e73746352274a598a25ee (diff) |
staging: wfx: allow to send 802.11 frames
Three things make this task more complex than it should:
- Chip necessitate to associate a link-id to each station. It is same
thing than association ID but, using 8 bits only.
- Rate policy is sent separately from Tx frames
- Driver try to handle itself power saving of stations and multicast
data
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20190919142527.31797-17-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/wfx/data_tx.h')
-rw-r--r-- | drivers/staging/wfx/data_tx.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h new file mode 100644 index 000000000000..f59a259bb744 --- /dev/null +++ b/drivers/staging/wfx/data_tx.h @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Datapath implementation. + * + * Copyright (c) 2017-2019, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_DATA_TX_H +#define WFX_DATA_TX_H + +#include <linux/list.h> +#include <net/mac80211.h> + +#include "hif_api_cmd.h" +#include "hif_api_mib.h" + +// FIXME: use IEEE80211_NUM_TIDS +#define WFX_MAX_TID 8 + +struct wfx_tx_priv; +struct wfx_dev; +struct wfx_vif; + +enum wfx_link_status { + WFX_LINK_OFF, + WFX_LINK_RESERVE, + WFX_LINK_SOFT, + WFX_LINK_HARD, +}; + +struct wfx_link_entry { + unsigned long timestamp; + enum wfx_link_status status; + uint8_t mac[ETH_ALEN]; + uint8_t old_mac[ETH_ALEN]; + uint8_t buffered[WFX_MAX_TID]; + struct sk_buff_head rx_queue; +}; + +struct tx_policy { + struct list_head link; + uint8_t rates[12]; + uint8_t usage_count; + uint8_t uploaded; +}; + +struct tx_policy_cache { + struct tx_policy cache[HIF_MIB_NUM_TX_RATE_RETRY_POLICIES]; + // FIXME: use a trees and drop hash from tx_policy + struct list_head used; + struct list_head free; + spinlock_t lock; +}; + +struct wfx_tx_priv { + ktime_t xmit_timestamp; + struct ieee80211_key_conf *hw_key; + uint8_t link_id; + uint8_t raw_link_id; + uint8_t tid; +} __packed; + +void tx_policy_init(struct wfx_vif *wvif); + +void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, + struct sk_buff *skb); +void wfx_tx_confirm_cb(struct wfx_vif *wvif, struct hif_cnf_tx *arg); +void wfx_skb_dtor(struct wfx_dev *wdev, struct sk_buff *skb); + +int wfx_unmap_link(struct wfx_vif *wvif, int link_id); +void wfx_link_id_work(struct work_struct *work); +void wfx_link_id_gc_work(struct work_struct *work); +int wfx_find_link_id(struct wfx_vif *wvif, const u8 *mac); + +static inline struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb) +{ + struct ieee80211_tx_info *tx_info; + + if (!skb) + return NULL; + tx_info = IEEE80211_SKB_CB(skb); + return (struct wfx_tx_priv *) tx_info->rate_driver_data; +} + +static inline struct hif_req_tx *wfx_skb_txreq(struct sk_buff *skb) +{ + struct hif_msg *hif = (struct hif_msg *) skb->data; + struct hif_req_tx *req = (struct hif_req_tx *) hif->body; + + return req; +} + +#endif /* WFX_DATA_TX_H */ |